EP0926305B1 - Sicherheitsvorrichtung, insbesondere für Kraftfahrzeuge - Google Patents

Sicherheitsvorrichtung, insbesondere für Kraftfahrzeuge Download PDF

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Publication number
EP0926305B1
EP0926305B1 EP98403184A EP98403184A EP0926305B1 EP 0926305 B1 EP0926305 B1 EP 0926305B1 EP 98403184 A EP98403184 A EP 98403184A EP 98403184 A EP98403184 A EP 98403184A EP 0926305 B1 EP0926305 B1 EP 0926305B1
Authority
EP
European Patent Office
Prior art keywords
signal
user
locking
unlocking
biometric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98403184A
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English (en)
French (fr)
Other versions
EP0926305A1 (de
Inventor
Luc Cabinet Ballot-Schmit Wuidart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics SA
Original Assignee
STMicroelectronics SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STMicroelectronics SA filed Critical STMicroelectronics SA
Publication of EP0926305A1 publication Critical patent/EP0926305A1/de
Application granted granted Critical
Publication of EP0926305B1 publication Critical patent/EP0926305B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
    • G07C9/25—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
    • G07C9/257—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition electronically
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/00206—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the keyless data carrier being hand operated
    • G07C2009/00214—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the keyless data carrier being hand operated by one push button
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns

Definitions

  • the present invention relates to a security system, in particular for a motor vehicle.
  • a system comprising a fixed terminal and a portable object capable of delivering a signal. unlocking at the fixed terminal.
  • the fixed terminal is constituted by the centralized locking / unlocking center of the vehicle
  • the portable unit is constituted by a remote control unit for closing and opening the doors of the vehicle remotely.
  • the portable object is intended to be carried by an authorized user, in particular the owner of the vehicle. Its function is to deliver, under certain conditions, a locking / unlocking signal to the fixed terminal.
  • This signal is generally emitted by carrier wave (electromagnetic wave or infrared wave).
  • the locking / unlocking signal delivered by the portable unit generally comprises a fixed or evolving code (that is to say whose value is a function of the number of transmissions previously carried out) which must be recognized as valid by the terminal. fixed to cause the vehicle doors to be locked or unlocked.
  • the object of the invention is to overcome this drawback of the safety systems of the prior art.
  • the idea which is the basis of the invention consists in associating the security system with its (or its) authorized user (s), so that only it (s) it (or these) could (s) cause the unlocking of the vehicle doors.
  • the invention proposes to use means for measuring a biometric signature of the user (s) authorized user (s).
  • a biometric signature is for example defined by a fingerprint, the iris of the eye, or an audiometric spectrum of the voice of the authorized user.
  • such a system may present a risk of accidental unlocking of the vehicle doors, for example if the authorized user inadvertently pronounces a word or a sequence of words capable of causing the doors to be unlocked while he is near the vehicle. If he does not realize it, he can leave his vehicle and leave it unattended while the doors are unlocked.
  • Document JP-A-01 114 193 discloses a secure voice-activated vehicle door opening system. Three signals are taken into account: a command code triggered by a switch, digitization of the voice, and a code specific to the transmitter, emitted by a code establishment circuit. All of these three signals are transmitted in modulated form to a receiver on the vehicle.
  • document WO-A-9 515 663 describes a remote control system for a household appliance, such as a garage door, based on a transmission using DTMF coding.
  • DTMF codes come from a numeric keypad or voice input, in the latter case an appropriate conversion.
  • JP-A-08 270 281 describes an access control system based on a magnetic card, associated with a fingerprint reader. Operation is based on the detection of both a pre-established code and the recognition of the fingerprint.
  • Another object of the present invention is to propose means making it possible to prevent any untimely unlocking of the vehicle.
  • the function of the remote control unit associated with the portable object is preserved, so that the current habits of the users are not profoundly modified.
  • FIG 1 there is schematically shown a functional unit constituted in the embodiment of the invention by a motor vehicle 101. This is equipped with a fixed on-board terminal such as a central locking / unlocking central 102.
  • the system also includes a portable object 103 such as a remote control unit associated with a vehicle key.
  • a portable box is confused with the remote control box or the vehicle key, and these three expressions are used without distinction, unless it is arranged otherwise.
  • This portable box is intended to be worn by an authorized user 104 such as the owner of the vehicle. Other authorized users may also have to use the portable box 103 or another box of the same kind which is more personally assigned to them.
  • the portable box 103 is intended to deliver, under certain conditions, a locking / unlocking signal SD to the fixed terminal 102.
  • This unlocking signal can be transmitted by carrier wave such as an electromagnetic wave or an infrared wave. In the first case, it may be a radiofrequency signal modulated in amplitude or in phase.
  • the key 103 conventionally comprises a metal part 12 forming a key insert, as well as a plastic housing 11 forming a head or part for gripping the key.
  • the housing 11 provides a remote control function and for this purpose contains an electronic circuit for the emission of the aforementioned unlocking signal SD.
  • the remote control unit includes means for detecting active user intervention.
  • These means may for example include one or more keys on a keyboard. More simply, these means comprise a switch SW, for example of the push button type, disposed under a first region 13 of the remote control unit 11. This is made of plastic. Due to a reduced thickness or adjacent ribs, the part 13 of the housing can bend under the pressure exerted by the thumb 15 of the user so as to actuate the switch SW contained in the housing 11 (and which, for this reason is shown in broken lines in Figure 2).
  • the remote control unit 11 further comprises means for measuring a biometric signature of an authorized user of the vehicle.
  • One such means may include a microphone and a voice recognition device for identifying the user's voice.
  • this means comprises a fingerprint sensor CED disposed inside the housing 11 (and which for this reason is also shown in broken lines in FIG. 2) whose active surface is flush with the surface of the housing 11 of the key head.
  • Such sensors are now available in the form of monolithic integrated circuits at a price compatible with the nature of the market for security systems for motor vehicles and which are sufficiently precise and reliable and compact for this type of application.
  • the active surface of this sensor is less than 2 cm 2 .
  • This active surface includes nearly one hundred thousand detection points arranged in a matrix.
  • the sensor delivers digital data in series corresponding to a scan of its active surface. A scan of the entire active surface is performed eight times per second.
  • the fingerprint sensor is disposed in a region 14 of the housing 11 which is opposite to the aforementioned region 13 so that the user's index finger 16 is in contact with the part 14 then that his thumb 15 is in contact with the part 13, when the housing 11 is pinched between these two fingers.
  • the senor can also be disposed on the surface of the housing 11 at the aforementioned part 13, so that the thumb 15 of the user is applied against the active surface of the sensor and also exerts through that -this pressure to activate the push button SW on the remote control.
  • FIG 3 there is shown a block diagram of the portable object according to the invention. More precisely, it is a functional diagram of the means of the invention included in the portable object.
  • the portable object comprises means for detecting an active intervention by a user. These means produce an activation signal SA1.
  • These means include the switch SW, one terminal of which is connected to the positive terminal of a positive voltage source ST1, the negative supply terminal of which is connected to ground.
  • the SW switch is of the stealth type like a push button.
  • These means further comprise a time delay means MS1.
  • the first terminal of the switch SW is connected as has been said above, and its other terminal is connected to the input of the timing means MS1, the output of which delivers the activation signal SA1.
  • This time delay means is for example a monostable time constant circuit T. It has the effect of maintaining the activation signal SA1 in the active state, that is to say in the logic state 1, for a time window determined (corresponding to its time constant T), after closing of the switch SW.
  • the portable unit also includes a means of measuring a biometric signature of the user which, as mentioned above, is preferably a CED fingerprint sensor. This sensor delivers a measurement signal SM2.
  • the portable unit further comprises means for generating the unlocking signal SD, the function of which is to produce the unlocking signal when the activation signal SA1 and the measurement signal SM2 are produced in the determined time window T of a part, and when the signature measured corresponds to that of an authorized user on the other hand.
  • the management circuit 20 further comprises a microcontroller M1 comprising a memory DB2. in which the biometric signatures of one or more authorized users are stored (i.e. here the fingerprint of the thumb or index finger, as the case may be, or of any other finger). These signatures can be stored in the form of a binary data matrix.
  • the biometric signatures of each authorized user are stored in separate areas of DB2 memory referenced by a user number. For example, five separate zones can be provided for storing the biometric signatures of five different authorized users corresponding to members of the same family, to each of which is fictitiously associated a user number 1, 2, 3, 4 or 5 respectively.
  • the signal SM2 delivered by the fingerprint sensor CED is a digital signal.
  • the data provided on the second input E2 of unit 20, are therefore directly usable by the microcontroller M1. Otherwise, an analog / digital converter must be provided.
  • the microcontroller M1 is controlled by a management program.
  • the data contained in the measurement signal SM2 corresponds to the data stored in one of the five memory zones of the memory DB2 of the microcontroller M1
  • the latter delivers on an output OUT a signal transmitted to a transmission circuit ER2 to cause the SD unlock signal to be transmitted via, for example, an antenna or an infrared diode.
  • a logic gate PL2 of type ET the first of which input receives the activation signal SA1 and a second input of which receives the measurement signal SM2.
  • the output of this gate PL2 is connected to an input I1 of the microcontroller M1.
  • the presence of door PL2 is only intended to illustrate one of the conditions. according to the invention so that the unlocking signal is transmitted, namely that the activation signal SA1 and the measurement signal SM2 are generated during a time window T.
  • the measurement signal SM2 delivered by the sensor CED can be transmitted on the input I1 of the microcontroller M1 only when the activation signal SA1 is active in logic state 1.
  • the signals SA1 and SM2 can be transmitted on two separate inputs of the microcontroller M1 to be processed therein in a logical operation of the AND type.
  • the window time T during which the signal SA1 is maintained in the active state, must at least be equal to the duration of the transmission of the data corresponding to the fingerprint of a user by the measurement signal SM2.
  • a time window of 500 milliseconds is sufficient.
  • the portable object also comprises at least one other means of measuring a biometric datum of the user producing another measurement signal.
  • the means for generating the unlocking signal SD then produce the signal SD when the activation signal SA1 and all the measurement signals are produced in the above-mentioned time window T, and when the measured signature corresponds to that of an authorized user and including his fingerprint.
  • Such other biometric data of the user can be constituted by the arterial pressure measured at the level of his finger.
  • the means for measuring this biometric data then comprises a pressure sensor CPR.
  • biometric datum of the user can also be constituted by the temperature of his finger.
  • the means for measuring this biometric data then comprises a PTC temperature sensor.
  • a second logic gate PL3 of the ET type has been schematically represented which receives the measurement signal SM3 delivered by the pressure sensor CPR on a first input, and the activation signal SA1 on a second input. The output of gate PL3 is transmitted to a second input I2 of the microcontroller M1.
  • a third logic gate PL4 of the ET type has been schematically represented which receives the measurement signal SM4 generated by the temperature sensor CTP on a first input, and the activation signal SA1 on a second input. The output of the door PL4 is connected to a third input 13 of the microcontroller M1.
  • the unlocking signal SD comprises an impersonal code. identifying that of authorized users whose biometric signature has been recognized as valid.
  • This impersonal code can simply consist of the user number 1, 2, 3, 4 or 5 mentioned above. This allows the activation of comfort functions in the vehicle upon reception of the SD signal. Such functions consist, for example, in adjusting the height of the seats, the position of the mirrors, a set temperature for an on-board air conditioning installation, a radio station, etc., at predefined values. corresponding to the usual choices of the user concerned.
  • the unlocking signal SD also includes a vehicle identification code with which the portable object is associated making it possible to associate a determined portable object with a single vehicle.
  • the structure of the fixed terminal for example constituted by the central locking / unlocking of the vehicle doors is not specific to the invention and can therefore be in accordance with those of the systems of the prior art. At the very least, it is within the reach of the skilled person, and, for this reason, is not described in detail in the present description.
  • the locking / unlocking signal may also include an evolving code, that is to say a code whose value changes with each transmission.
  • an evolving code that is to say a code whose value changes with each transmission.
  • fraud attempts consisting in capturing and recording (with suitable electronic means) the locking / unlocking signal when it is emitted in a normal manner by the authorized user, for the purpose to reproduce it later fraudulently.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Lock And Its Accessories (AREA)

Claims (9)

  1. Sicherungssystem, insbesondere für Kraftfahrzeuge, mit einem Festanschluß (102) und einem Mobilteil (103) welches an den Festanschluß ein Verriegelung-/Entriegelung-Signal (SD) für eine funktionelle Einheit eines solchen Fahrzeugs liefern kann,
    wobei das Mobilteil (103) umfaßt:
    - einen verborgenen Schalter (SW), der eine Einrichtung zur Erfassung eines aktiven Eingriffs eines Benutzers bildet und ein Aktivierungssignal (SA1) erzeugt;
    - ein Mittel zum Messen einer biometrischen Signatur des Benutzers, das ein erstes Meßsignal (SM2) erzeugt;
    - Mittel (20) zur Generierung des Verriegelung-/Entriegelung-Signals (SD), welche das Verriegelung-/Entriegelung-Signal (SD) erzeugen, wenn einerseits wenigstens das Aktivierungssignal (SA1) und das Meßsignal (SM2) in einem zeitlich bestimmten Fenster (T) erzeugt werden und wenn andererseits das gemessene biometrische Signal mit demjenigen eines autorisierten Benutzers korrespondiert.
  2. System nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Einrichtung zur Erfassung eines aktiven Eingriffs eines Benutzers einen Schalter (SW) vom Typ eines Druckknopfes umfaßt.
  3. System nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Einrichtung zur Erfassung eines aktiven Eingriffs des Benutzers einen Schalter vom Typ eines Druckknopfes (SW) und ein Verzögerungsmittel (MS1) umfaßt, um das Aktivierungssignal (SA1) während des zeitlich bestimmten Fensters (T) nach der Schließung des Schalters (SW) in einem aktiven Zustand zu halten.
  4. System nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Mittel zum Messen eines biometrischen Signals des Benutzers einen Meßfühler für einen Fingerabdruck (CED) umfaßt.
  5. System nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet,
    daß die Mittel (20) zur Generierung des Verriegelung-/Entriegelung-Signals umfassen:
    - einen ersten Eingang (E1), um das Aktivierungssignal (SA1) zu empfangen;
    - einen zweiten Eingang (E2), um das Meßsignal (SM2) zu empfangen;
    - eine Mikrosteuereinheit (M1), die durch ein Steuerungsprogramm geführt wird und einen Speicher aufweist, in welchem die biometrischen Signaturen eines oder mehrerer autorisierter Benutzer gespeichert sind;
    - einen Senderkreis (ER2) des Entriegelungssignals (SD).
  6. System nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Mobilteil ferner wenigstens ein weiteres Mittel zum Messen eines biometrischen Datenwertes eines Benutzers, das ein weiteres Meßsignal (SM3, SM4) erzeugt, und daß die Mittel zur Generierung des Verriegelung-/Entriegelung-Signals (SD) das Verriegelung-/Entriegelungs-Signal (SD) erzeugen, wenn einerseits das Aktivierungssignal (SA1) sowie alle Meßsignale in dem zeitlich festgelegten Fenster (T) erzeugt werden und wenn andererseits die gemessene Signatur derjenigen eines autorisierten Benutzers entspricht.
  7. System nach Anspruch 6,
    dadurch gekennzeichnet,
    daß eines der weiteren Mittel zur Messung eines biometrischen Datenwertes einen Druckfühler (CPR) umfaßt.
  8. System nach Anspruch 8 oder nach Anspruch 7,
    dadurch gekennzeichnet,
    daß eines der weiteren Mittel zum Messen eines biometrischen Datenwertes einen Temperaturfühler (CTP) umfaßt.
  9. System nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Entriegelungssignal einen nicht-personenbezogenen Code umfaßt, der den autorisierten Benutzer identifiziert, dessen Signatur gemessen wurde, um so die Aktivierung der Komfortfunktionen in der funktionellen Einheit zu gestatten.
EP98403184A 1997-12-24 1998-12-16 Sicherheitsvorrichtung, insbesondere für Kraftfahrzeuge Expired - Lifetime EP0926305B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9716467 1997-12-24
FR9716467A FR2772958B1 (fr) 1997-12-24 1997-12-24 Systeme de securite, notamment pour vehicule automobile

Publications (2)

Publication Number Publication Date
EP0926305A1 EP0926305A1 (de) 1999-06-30
EP0926305B1 true EP0926305B1 (de) 2004-04-28

Family

ID=9515101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98403184A Expired - Lifetime EP0926305B1 (de) 1997-12-24 1998-12-16 Sicherheitsvorrichtung, insbesondere für Kraftfahrzeuge

Country Status (4)

Country Link
US (1) US6164403A (de)
EP (1) EP0926305B1 (de)
DE (1) DE69823470T2 (de)
FR (1) FR2772958B1 (de)

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JP3430747B2 (ja) * 1995-11-16 2003-07-28 日産自動車株式会社 車両用防盗装置
DE19630747C1 (de) * 1996-07-30 1997-09-25 Siemens Ag Diebstahlschutzsystem für ein Kraftfahrzeug

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DE69823470T2 (de) 2004-09-09
US6164403A (en) 2000-12-26
FR2772958A1 (fr) 1999-06-25
FR2772958B1 (fr) 2000-05-26
EP0926305A1 (de) 1999-06-30
DE69823470D1 (de) 2004-06-03

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